A new production of the opera King Roger will open this week. At a time when Europe was charged with fear of the 'Muslim threat', this 12th century king collaborated with an Islamic scholar on an extraordinary project.

In seeking to understand the roots of Islamic State, we’ve tried to spread the net wide, but make no claim to being comprehensive or having the final word.
Reuters/Stringer; David Wise/Flickr; Reuters/Stringer; EPA/Sanjeev Gupta; Reuters/Fadi Al-Assaad; Royal Geographical Society/Wikimedia Commons; Reuters/Stringer; AAP/Asmaa Abdelatif; Reuters/Stringer March 11, 2016